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  <h1 class="title">简介</h1>
  <p class="para">
   Traces through and dumps the hierarchy of file inclusions and class inheritance at runtime.
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   The files may have been included using 
   <span class="function"><a href="function.include.html" class="function">include</a></span>, <span class="function"><a href="function.include-once.html" class="function">include_once</a></span>, 
   <span class="function"><a href="function.require.html" class="function">require</a></span>, or <span class="function"><a href="function.require-once.html" class="function">require_once</a></span>.
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   Class inheritance dependencies are also reported.
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